54 LEPIDOPTERA INDIOA. 



others subsequently received ; in the former alone is the black irroration between 

 the common discal lines of the upperside of both wings present " {de N. I.e.). 



Distribution. — " This species seems to be confined to the island of Great 

 Nicobar, where the late Mr. F. de Roepstorff and Mr. B. H. Man have each obtained 

 two males. Mr. Doherty also obtained both male and female at Great Nicobar, who 

 states that the female, when flying, resembles the white C. Thyodamas, for which he 

 at first mistook it " {I.e.). 



Our illustrations of this species on Plate 307 are reproduced from Mr. de 

 Niceville's figures. 



Indo-Malayan Species. — Cyrestis Nivea (Amathusia Nivea, Zinken-Somraer, 

 Nova Acta Acad. N. C. 1831, p. 138, pi. 14, fig. 1, c?. Habitat. Java. — 

 Cyrestis Lutea (Amath. lutea, Zink. Som. I.e. p. 140, pi. 14, fig. 2, c? (1831). 

 Habitat. Java. — Cyrestis Fadorensis, Kheil, Rhop. Nias, p. 22, pi. 3, fig. 2 (1884). 

 Habitat. Nias Island. — Cyrestis sxiperbus, Staudinger, Dents. Ent. Zeit. Lep. 1889, 

 p. 53. Habitat. Palawan. — Cyres/is ilfo«aZis,Erichson,'Nov. Act. Ac. N. C. (1834), 

 p. 402, pi. 50, fig. 3. Semper, Reis. Phil. Lep. p. 113, pi. 21, fig. 3, 4, S (1888). 

 Habitat. Philippines. — Cyrestis Irmse, Forbes, Nat, Wanderings, p. 274 (1885). 

 Waterhouse, Aid, 11, pi. 176, fig. 2. de Niceville, Journ. Bombay Nat. Hist. Soc. 

 1891, p. 358. Syn. Cyrestis Sumatrensis, Staudinger, Bxot. Schmett. p. 133 (1888). 

 Habitat. Sumatra ; Malay Peninsula. — Cyrestis obscurior, Staudinger, D. Ent. Zeit. 

 Lep. 1889, p. 53. Habitat. Philippines. — Cyrestis seminigra, Grosse-Smith, Ann. 

 Nat. Hist. 1889, p. 313. Pryer and Cator, Brit. N. Borneo Herald, 1894, p. 260. 

 Habitat. N. Borneo. — Cyrestis Theresce, de Niceville, Journ. As. Soc. Bengal, 1894, 

 p. 18, pi. 5, fig. 8, 6. Habitat. N.E. Sumatra. 



Genus CHERSONESIA. 



CJierso7iesia, Distant, Ehop. Malayana, p. 142 (1883). Semper, Eeisen Phil. Lep. p. Ill (1888). 

 Cyrestu (sect. 2), Feldor, N. Lep. p. 24 (1861). 

 Cyrestis (part), Westwood. de Niceville. 



Imago. — Wings small, short. Male. Forewing triangular ; costa arched, apex 

 obtuse, exterior margin slightly oblique, nearly straight and even ; first subcostal 

 branch emitted at one-fifth before end of the cell, second at about one-third beyond 

 the cell ; upper discocellular extremely short, middle slightly concave, lower 

 recurved and extremely slender, joining the median at some distance before its 

 middle branch. Hindiving broad ; apex oblique and almost rounded ; exterior 

 margin uneven, angled at end of upper median and slightly lobate before anal 

 angle; precostal vein short, very slender, starting from the costal at some distance 

 above base of subcostal ; upper discocellular at a short distance beyond base of 



